This question already has an answer here:
I know Christians believe that Jesus is God and that's kind of a no-no in Judaism. The thing is, Jesus himself did not say he is God.
Well, there are esoteric things. For example, he said that, "I and the father are one". Well, Kabbalah also says that Israel, God and Torah are one.
He declared that sin is forgiven. Then he claimed that "son of man" can indeed forgive sin. This seems to "imply" that he claims that he is God. But not necessarily. "Son of man" may be someone else. Forgiving sin may be something many angels can do. You can check more here: the site tries to convince people that Jesus did claim to be God, but even the strongest claim are vague.
In any case, Jesus' claim that he is God is always very circumstantial. It's never direct and can have many meaning. On the other hand, this site argues that Jesus simply tried to convey that he is a prophet or God's representative.
Then there is this son-of-God thing. Nephilim are also called sons of God. It could mean many things.
Jesus said to love your enemy which differ from rabbinical teaching. Perhaps he means that we should have mercy even for mass murderers, rapists, etc. which we did. He probably think that it's what Torah really means. There is something in Torah about helping cows of your enemies. Perhaps small gestures of kindness are good even for enemies, but not too much.
So if we don't take into account that Christians think that Jesus is God's Avatar, is Jesus himself a really bad guy? I mean, it's not like he killed, robbed or raped anyone. Could he really be a rabbi or prophet? After all, rabbis and prophets often have different opinions than mainstream.